Malicious PDF — malware analysis report

Static analysis result for SHA-256 70838b9d73879fb9…

MALICIOUS

PDF

36.6 KB Created: 2020-04-24 04:58:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 79a8b5318ec302a5a8bf855146e567c9 SHA-1: c8f9937a678879d957f21027876cabeec08b861e SHA-256: 70838b9d73879fb99a22dcb558eb99821dc72ff057c207c2e86f60cb5f2e0467
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The primary URL points to an HTML page related to medical procedures, likely a lure. While no scripts were extracted, the structure and numerous external links suggest an attempt to manipulate search engine results or redirect users to potentially malicious content hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://marmarworld.com/uploads/1/3/0/6/130640091/130640091.html#ultrasound+guided+biopsy+ovarian+cancer
    • http://tylersummitt.com/uploads/1/3/0/5/130550711/7193405.pdf
    • http://pursuitofgreytness.com/uploads/1/3/0/8/130874563/molimubufipejesiwuw.pdf
    • http://poupemancine.net/uploads/1/3/0/7/130739824/f55292d57090c.pdf
    • http://ombige.com/uploads/1/3/0/8/130874129/zorunawuwurobum_fowoweket_daremas_sewisozitudeg.pdf
    • http://honigland.eu/uploads/1/3/1/6/131637140/3254108.pdf
    • http://sdziontravel.com/uploads/1/3/0/4/130489467/063ac96837c0d.pdf
    • http://elizabethmslocum.com/uploads/1/3/0/6/130639939/rerujutibixul.pdf
    • http://rhondabangertyoga.com/uploads/1/3/0/3/130312983/vijinepuwowetiz.pdf
    • http://nobullshitvideos.com/uploads/1/3/0/6/130604292/1023201.pdf
    • http://klassyentertainment.ca/uploads/1/3/0/7/130776883/robamasexaxiwe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065c4.bin
fad7854f02394338d86dbafe79aa7d4335cc76c5821c9deb5bf5a5cbeff3cb99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C4 7964 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.